Set Time Zone for Select statement

[Blaine Tuisee]

I am writting a query in SQL Developer. I have a field in the table that holds a timezone. I need to set the query to use that timezone. Any ideas? Here's the query I have so far:

select to_char(dateoftransport, 'MM-DD-YYYY') as "Date",
  dispatch_id as "Dispatch,
  vehicletype as "Dispatch Type"
from progamgh.dispatch
where patients >= 1 and
  dateoftransport >= to_date('01-01-2010', 'MM-DD-YYYY') and
  dateoftransport <= to_date('01-31-2010', 'MM-DD-YYYY')